DAC8728SPAGR datasheet by Texas Instruments

DAC8728SPAGR Frequently Asked Questions (FAQs)

• What is the recommended power-up sequence for the DAC8728?
  The recommended power-up sequence is to apply VCC first, followed by AVCC, and then DVCC. This ensures that the analog and digital circuits power up in a controlled manner.
• How do I configure the DAC8728 for unipolar or bipolar output?
  The DAC8728 can be configured for unipolar or bipolar output by setting the UNIPOLAR/BIPOLAR pin high or low, respectively. Additionally, the output range can be set using the VREF pin and the internal reference voltage.
• What is the maximum update rate for the DAC8728?
  The maximum update rate for the DAC8728 is 1 MSPS (million samples per second). However, this rate may vary depending on the specific application and system requirements.
• How do I handle the DAC8728's digital interface?
  The DAC8728's digital interface is a 3-wire serial interface. The interface consists of a clock input (SCLK), a data input (SDIN), and a load signal (LDAC). The interface operates in SPI-compatible mode, and the clock frequency can be up to 50 MHz.
• What is the purpose of the DAC8728's internal reference voltage?
  The internal reference voltage is used to set the full-scale output voltage of the DAC. The internal reference voltage is 2.5V, but it can be adjusted using an external resistor divider network.